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commercial grade heat detector
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LTE temperature sensor, NB-IoT Heat Detector, WL-HD903, Wanl···
LTE temperature sensor···
2026-07-10
LTE temperature sensor direct from Wanlin Fire Protection — 12-year factory experience, WL-HD903 fully certified UL 521/EN 54-5/CE/FCC/RoHS/REACH. Key specs: NB-IoT (LTE Cat-NB1), Fixed Temperature Sensor + NB-IoT Low-Power Module, 5-year replaceable battery (2x AA lithium). MOQ 100 units, 25-30 working days, OEM/ODM custom branding available. Serving 60+ c···